KMB NOVAR 2600, Руководство по эксплуатации

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NOVAR 2600 Operating Manual
2.2.2 Measured Electrical Quantities
2.2.2.1 Measured Voltages
Measured voltages in wye ( star ), delta or Aron connection connect to terminals VOLTAGE / N (No.
11),
U1
(No. 12),
U2
(No. 13), and
U3
(No. 14). Phase rotating direction is free.
Types of connections are stated in the following table.
Tab. 2.1: Connection of the measured voltages – VOLTAGE group of terminals
Terminal Type of connection
VOLTAGE wye-star (Y) delta (D) Aron (A)
U
1
L1-phase voltage L1-phase voltage L1-phase voltage
U
2
L2-phase voltage L2-phase voltage L2-phase voltage
U
3
L3-phase voltage L3-phase voltage L3-phase voltage
U
N
neutral wire voltage - -
It is advisable to protect the supply leads by 1A safety fuses.
The type of voltage and currents connection must be entered in
Installation parameters : the code
shows the amount of connected phases, 3Y means three-phase connection in wye ( star ), 3D in delta.
3A means Aron connection. For 1Y3 or 1D3 setup, the instrument operates in, so called, single phase
mode – see description in appropriate chapter below..
In the case of indirect connection via the measuring voltage transformers, it is necessary to enter this
matter ( connection
Mode ) and the values of the VT ratios during the setup of the instrument.
2.2.2.2 Measured Currents
The instruments are designed for indirect current measurement via external CTs only. Proper current
signal polarity (S1 & S2 terminals) must be observed. You can check the polarity by the sign of phase
active powers on the instrument display (in case of energy transfer direction is known, of course).
The CT-ratio must be set. in
the Installation group of parameters (see below).
The I2 terminals stay free in case of the Aron (A) connection.
To get better precision when using overweighted CTs, you can apply more windings of
measured wire through the transformer. Then you must set the multiplier parameter (see
below). For standard connection with 1 winding, the multiplier must be set to 1.
The current signals from 5A or 1A (or 0.1A for the „X/100mA“ models) instrument current transformers
must be connected to the
CURRENT connector terminal pairs I11 – I12 , I21 – I22 , I31 – I32 (No. 1÷6).
A particular connector is provided with a screw lock to prevent an accidental pullout and possible
unwanted disconnection of the current circuit.
A connection cable maximum cross section area is 2.5 mm
2 .
2.2.3 Outputs
Instruments can have up to 18 relay (“R”- models) or transistor (“T”-models) outputs. For models with
more than 9 outputs, the outputs are arranged in two output groups. The groups are isolated from
each other.
Each group has one relay common pole terminal
C1 , C2 ( No.15 and 25 ) and up to nine individual
relay output terminals 1.1 through 1.9 ( No.16 ÷ 24 ) for group No. 1 and 2.1 through 2.9 ( No.26 ÷
34 ) for group No. 2.
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